Issue 52

B. Paermentier et alii, Frattura ed Integrità Strutturale, 52 (2020) 105-112; DOI: 10.3221/IGF-ESIS.52.09

finite element property. However, even without fulfilling the mesh size requirement, the DT3 simulation did approximate experimental data accurately. In future investigations, more advanced damage materials models will be implemented to improve the predictive performance of the numerical simulations. Furthermore, the GTN relations only considers isotropic ductile damage conditions as well as the physical mechanisms of ductile damage evolution. In order to include brittle damage, multiple extensions of the GTN model have been proposed. Some suggestions include a non-local probability approach; others are based on a clear brittle fracture criterion. However, these proposed models increase the calibration efforts considerably. Therefore, in future research more advanced numerical models are required as to implement anisotropic behaviour as well as temperature dependency without overcomplicating the calibration procedures.

A CKNOWLEDGEMENTS

T

he author gratefully acknowledges the support of the Research Foundation Flanders (FWO) via PhD fellowship grant 1SB6420N..

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